bipartite (version 2.16)

compart: Detects compartments

Description

Finds number of compartments, based on multivariate ordination techniques, and labels interactions according to the compartment they belong to.

Usage

compart(web)

Arguments

web

A bipartite interaction web, i.e.~a matrix with higher (cols) and lower (rows) trophic levels.

Value

Returns a list with two entries:

cweb

A matrix similar to web, but now with compartment numbers instead of interaction values.

ncompart

The number of compartments.

Details

Internal function, to be called by networklevel.

References

Lewinsohn, T. M., P. I. Prado, P. Jordano, J. Bascompte, and J. M. Olesen (2006) Structure in plant-animal interaction assemblages. Oikos 113, 174--184

See Also

See also networklevel.

Examples

# NOT RUN {
# make a nicely comparted web:
web <- matrix(0, 10,10)
web[1,1:3] <- 1 
web[2,4:5] <- 1 
web[3:7, 6:8] <- 1
web[8:10, 9:10] <- 1
web <- web[-c(4:5),] #oh, and make it asymmetric!
web <- web[,c(1:5, 9,10, 6:8)] #oh, and make it non-diagonal
compart(web)

# or, standard, use Safariland as example:
data(Safariland)
compart(Safariland)
# }